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The Significance of a 0-1mAdc Analog Output

November 16, 2018

Sep 11, 2017 10:47:45 PM

The 0-1mA output range was typically used with analog meters in days gone by, before the 4-20mAdc outputs became popular.

However, 0-1mAdc is still a common scaling used in the field, mainly because this current signal can be transmitted over long distances with minimal loss. For example, 0 -1mAdc can be sent a long distance before the signal starts exhibiting loss, whereas 4-20mAdc can also be sent long distances and maintain its integrity.

For those meters/DEVICES requiring a voltage input, such as 0-5Vdc or 0-10Vdc, sending signal long distances could incur loss in voltage thus providing incorrect readings. With current (0-1mAdc) the signal can be converted at the meter to a voltage using a precision resistor with no loss in accuracy at the device it is going into.

A 4-20mAdc current signal has the added attraction of having a 4mAdc indication to represent a “zero” level of it’s

measurement representation. If the 4mAdc indication is not there, then an alarm condition can be seen. The 0-1mAdc

range output signal does not afford this condition, as a “defective” device signal will still read zero.

Ohio Semitronics has the analog output option that you may need. If analog is not what you desire, digital options (MODBUS) are available.

If you would like to know about our output offerings
or our other measurement capabilities,
chat with our live technical support
or call 614-777-1005

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